Home / 121,284.80-181,927.20-91,541.60

Finding the Fourth Proportional to 121,284.80, 181,927.20 and 91,541.60

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Solution

The fourth proportional to 121,284.80, 181,927.20 and 91,541.60 is: 137,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,284.80 : 181,927.20 = 91,541.60 : x
  2. Step 2: Convert to fraction form
    121,284.80/181,927.20 = 91,541.60/x
  3. Step 3: Cross multiply
    121,284.80x = 181,927.20 × 91,541.60
  4. Step 4: Simplify right side
    121,284.80x = 16,653,906,971.52
  5. Step 5: Solve for x
    x = 16,653,906,971.52/121,284.80
  6. Step 6: Final answer
    x = 137,312.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.